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Hebei Gee Pipe Mill Co.,Ltd.
Hebei Gee Pipe Mill Co.,Ltd.  

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You are here: home  > bend  > butt-welding ASTM A860/A860M threaded alloy steel bend

butt-welding ASTM A860/A860M threaded alloy steel bend 

Price: 5.0~3000.0 USD 
Payment Terms: T/T,L/C,WU 
Place of Origin: Hebei, China (Mainland) 
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Product Detail

Model No.: 1/2"-48"
Production Capacity: 1,118,000 Ton/Tons per Year
Delivery Date: 7 after receipt of advanced...
Shape: Equal
Type: Elbow
Connection: Welding
standard: ASME B16.9
Means of Transport: Ocean,Land,Air
Packing: wooden cases or pallet or c...
Head Code: Hexagon
Technics: Others
Material: Stainless Steel
Brand Name: gee pipe
material: A234WPI WP5 WP9 WP11 WP22 W...

steel pipe bend ,high quality flange
1) TUV and ISO 9001 certificates
2) DIN/ EN1092/ ANSI B16.5/ UN /BS /AS2129
China's top 500 enterprises

 hot formed bend / carbon steel pipe fitting hot formed bend
Buttweld Fittings: Elbows 45° - 90° - 180° LR/SR
The function of a elbow is to change direction or flow in a piping system. By default, there are 5 opportunities, the 45°, 90° and 180° elbows, all three in the "long radius" version, and in addition the 90° and 180° elbows both in the "short radius" version.
Long and Short Radius
Elbows are split into two groups which define the distance over which they change direction; the center line of one end to the opposite face. This is known as the "center to face" distance and is equivalent to the radius through which the elbow is bent.
The center to face distance for a "long" radius elbow, abbreviated LR always is "1½ x Nominal Pipe Size (NPS) (1½D)", while the center to face distance for a "short" radius elbow, abbreviated SR even is to nominal pipe size.
Here below, for example, you will find the center to face distance of four 2 inch elbows, (the "A" distance on the image).
1.   90°- 2"- LR : = 1½ x (25,4 x 2)   A = 76,2 mm
2.   180°- 2"- LR : = 1½ x (25,4 x 2) x 2   A = 152,4 mm
3.   90°- 2"- SR : = 25,4 x 2   A = 50,8 mm
4.   180°- 2"- SR : = (25,4 x 2) x 2   A = 101,6 mm
45° Elbow
The function of a 45° elbow is the same as a 90° elbow, but the measurement of dimensions is different to that of the 90° elbow.
Image of 45° buttweld elbow.
The radius of a 45° elbow is the same as the radius of the 90° LR (1½D). However, the center to face dimension is not equivalent to the radius as in 90° LR elbows. This is measured from each face to the point of intersection of the center lines perpendicular to each other, distances B on the image. This is due to the smaller degree of bend. Short radius 45° elbows are not available.
Standards
The most applied version is the 90° long radius and the 45° elbow, while the 90° short radius elbow is applied if there is too little space. The function of a 180° elbow is to change direction of flow through 180°. Both, the LR and the SR types have a center to center dimension double the matching 90° elbows. These fittings will generally be used in furnesses or other heating or cooling units.
Dimensions, dimensional tolerances and more images, can be found in the main Menu "Fittings".
In addition to the defined elbows, there is the Reducing Elbow, which is a elbow with various diameters on the ends. Because this elbow, for many suppliers it is not a standard item, and thus probably a high price with a long delivery time, the use of a "normal" elbow with a separate reducer is an option if the situation allows.
Image of a buttweld reducing elbow.
Other degrees elbows can be machined from a standard elbow. Longer radius type, the center to face dimension e.g. is three times the nominal size (3D), even is available.
Dimensions, dimensional tolerances etc. for long and short radius elbows are defined in ASME B16.9.
Wall Thickness of Elbows
The weakest point on an elbow is the inside radius. ASME B16.9 only standardizes the center to face dimensions and some "squareness" dimensional tolerances. The wall thickness at the weld line location even is standardized, but not through the rest of an elbow. The standard states that the minimum tolerance will be within 12.5% of the minimum ordered wall thickness of the pipe. A maximum tolerance is specified only at the ends of the fitting.
Many providers of buttweld elbows (and tees) provide one schedule greater thickness so that sufficient wall thickness, after forming, remains.


Products Type:
Elbows, seamless and welded, LR & SR
Size:
26" - 48" for welded, 1/2"-24" for seamless
Standards:
GB /ASTM / ASME / DIN / JIS
Materials:
Carbon steel, Stainless steel, Alloy steel
Payment Term:
L/C at sight or T/T
Min Order Quantity:
1 Pieces or According to customer's requirement
Quality:
First grade
Productivity:
1,118,000T/Y
Applications Range:
for use in the petroleum, smelting, foodstuff, power, papermaking, chemical,
medical equipment, aviation, boiler heat exchanger, and other fields
Packing:
plywood case or pallet or as per customers' requests
Delivery Time:
At the earliest, within the period required by customers.
Others  
(1)Special design available according to requirement
(2) anti -corrosion and high-temperature resistant with black painting
(3) All the production process are made under the ISO9001:2000 strictly.

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Mr. Terry Ding
skype Mr. Terry Ding
sales manager
Tel: 86-0317-6853309
Fax: 86-0317-6853307
Mobile: 183 3071 3028
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Company Info

Hebei Gee Pipe Mill Co.,Ltd. [China (Mainland)]


Business Type:Manufacturer, Trading Company
City: Cangzhou
Province/State: Hebei
Country/Region: China (Mainland)

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